EP3673313B1 - Teleskop mit verbesserter leistung und vereinfachter montage - Google Patents

Teleskop mit verbesserter leistung und vereinfachter montage Download PDF

Info

Publication number
EP3673313B1
EP3673313B1 EP18758612.8A EP18758612A EP3673313B1 EP 3673313 B1 EP3673313 B1 EP 3673313B1 EP 18758612 A EP18758612 A EP 18758612A EP 3673313 B1 EP3673313 B1 EP 3673313B1
Authority
EP
European Patent Office
Prior art keywords
mirror
primary
telescope
sleeve
telescope according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18758612.8A
Other languages
English (en)
French (fr)
Other versions
EP3673313A1 (de
Inventor
Charlotte HOELTZEL
Cédric TACCONI
Christophe FURUI
Franck SEILLIER
Guillaume ANNA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Electronics and Defense SAS
Original Assignee
Safran Electronics and Defense SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Safran Electronics and Defense SAS filed Critical Safran Electronics and Defense SAS
Publication of EP3673313A1 publication Critical patent/EP3673313A1/de
Application granted granted Critical
Publication of EP3673313B1 publication Critical patent/EP3673313B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G02B7/183—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy, or solar concentrators
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2476—Non-optical details, e.g. housings, mountings, supports
    • G02B23/2484—Arrangements in relation to a camera or imaging device
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G02B7/1822—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors comprising means for aligning the optical axis

Definitions

  • the present invention relates to the field of optics and more particularly to a telescope which can be used for observation and sighting.
  • a telescope comprises a frame carrying a primary mirror and a secondary mirror held opposite the primary mirror by a support such that the primary mirror returns the luminous flux to the secondary mirror which returns it in turn to an eyepiece.
  • the frame includes a primary mirror fixing plate so as to maintain in position, relative to the eyepiece, the primary mirror assembly, support, secondary mirror without causing mechanical stresses on the primary mirror.
  • Cassegrain telescopes There are many types of telescopes, including Newton's telescopes and Cassegrain telescopes.
  • Cassegrain and related telescopes Schot Cassegrain, Maksutov Cassegrain
  • the primary mirror is pierced in its center to allow the luminous flux returned by the secondary mirror to pass to an eyepiece placed behind the primary mirror.
  • US2013208367A1 describes an example of an on-board sighting system.
  • FR3010537A1 describes a low strain telescope.
  • the eyepiece In telescopes used in observation and sighting systems on board vehicles, the eyepiece is replaced by a sensor connected to a viewing device mounted in the driving position of the vehicle.
  • the quality of the telescope depends on the relative positioning of the mirrors and the deformations undergone by the mirrors.
  • An aim of the invention is to improve the performance of these telescopes.
  • a telescope comprising a fixing plate, a primary mirror carried by a front face of the plate, and a secondary mirror held opposite the primary mirror by a support.
  • the support comprises a primary crown mounted around the primary mirror, a secondary crown mounted around the secondary mirror, and arms connecting the secondary crown to the primary crown and the support comprises a mechanical decoupling means of the secondary mirror vis-à-vis the primary mirror.
  • a mechanical decoupling means such as the arrangement of the secondary ring of the support makes it possible to limit the transmission of vibrations to the secondary mirror, which significantly improves the performance of the telescope, in particular when it is on board a vehicle.
  • the secondary crown comprises an external crown and an internal crown coaxial with the external crown and connected to the latter by symmetrically distributed mechanical decoupling elements.
  • This mode of mechanical decoupling is particularly simple.
  • the secondary mirror is received with play in the internal ring and is glued therein by means of a structural adhesive; the outer ring comprising first through holes and the inner ring comprising second through holes substantially aligned with the first holes to allow the introduction of an adhesive injection cannula.
  • This arrangement of the holes makes it possible to facilitate the introduction of the adhesive between the secondary mirror and the internal crown.
  • the first holes are made in the vicinity of the arms.
  • the outer ring has a greater thickness at this location for making the holes.
  • the primary mirror is connected to the plate by fixing elements each having a base fixed to the plate and, opposite the base, a bearing which is housed between a first rear portion and a second rear portion of the primary mirror and which receives a third section of an axis having a first section and a second section respectively received in a first bore and a second bore which are formed in the first rear portion and the second rear portion respectively .
  • the third section is received in the bearing with a sliding fit and is glued into the bearing by means of structural adhesive and the axle is provided with a central channel having a first end opening out to a part of the axle accessible when the axis is in position in the bores to receive one end of a glue injection cannula and a second end opening into at least one transverse channel, at least one end of which opens onto an external surface of the third section.
  • the quantity of glue being limited, the influence of an expansion thereof under the effect of thermal variation is low so that the glue does not generate sufficient stress on the primary mirror to cause deformation of the primary mirror. .
  • the arms then make it possible to maintain the secondary mirror in position relative to the primary mirror, by limiting, thanks to at least one of the arrangements indicated above, on the one hand, the transmission of vibrations to the secondary mirror and, on the other hand, on the other hand, to limit the zone of the primary mirror which is masked by the arms vis-à-vis an incident light flux.
  • the telescope is of the Cassegrain type and the plate has a rear surface comprising references for positioning the telescope with respect to an image capture device arranged opposite the rear face.
  • the positioning references are obtained by optical quality machining and include a face perpendicular to an optical axis of the telescope to form an inclination reference, a central bore to form a centering reference and a concave machining in a spherical cap. having a center on the optical axis to define a distance of the sensor from the secondary mirror.
  • the secondary mirror comprises, facing the primary mirror, a central portion provided with at least one centering engraving of the secondary mirror with respect to the primary mirror.
  • the invention is described here in application with a telescope of the Maksutov Cassegrain type.
  • the primary mirror, the secondary mirror and the support respectively bear the general references 100, 200, 300 in the figures.
  • the primary mirror 100 comprises a body of revolution 101 having a central axis on which are centered a reflecting surface 102, a reference face 103 opposite the reflecting surface 102, a peripheral surface 104 of cylindrical shape, and a central bore 105 opening onto the reflecting surface 102 and the reference face 103.
  • the reflecting surface 102 has the shape of a concave aspherical cap.
  • the reference face 103 comprises several, here two, grooves 106, 107, of circular shape and of rectangular cross section, which are centered on the central axis and which delimit an outer annular portion 108, an intermediate annular portion 109 and a portion internal annular 110.
  • the groove 106 is closer to the central axis than the groove 107.
  • the grooves 106, 107 make it possible to lighten the primary mirror 100 while the portions 108, 109, 110 form ribs for stiffening the surface reflective 102.
  • the secondary mirror 200 comprises a body of revolution 201 having a central axis on which a reflecting surface 202 is centered, a face 203 opposite the reflecting surface 202, and a peripheral surface 204 of cylindrical shape.
  • the reflecting surface 202 has a convex aspherical cap shape which faces the reflecting surface 102 of the primary mirror 100.
  • the central axis of the secondary mirror 200 is aligned with the central axis of the primary mirror 100 to define the optical axis A of the telescope.
  • the primary mirror 100, the secondary mirror 200 and the support 300 are here made of aluminum.
  • the primary mirror 100 is mounted on a fixing plate, generally designated as 1, on which the support 300 is fixed.
  • the support 300 comprises a primary crown 310 mounted on the fixing plate 1 to extend around the primary mirror 100, a secondary crown 320 mounted around the secondary mirror 200, and arms 350 connecting the secondary crown 320 to the primary crown 310
  • the support 300 is here in one piece.
  • the primary ring 310 extends around the primary mirror 1 without touching it and comprises an edge 313 enclosing the fixing plate 1 to ensure its attachment to the fixing plate 1.
  • the primary ring 310 is here fixed to the fixing plate 1 by gluing using a structural glue, here an epoxy glue.
  • the primary ring 310 has an edge 311 projecting from the primary mirror 100 on the side of the secondary mirror 200 and the edge 311 is provided with notches 312 making it possible to limit the part of the primary ring 310 as much as possible. which protrudes from the primary mirror 100 and which risks intercepting a secondary luminous flux directed towards the primary mirror 100.
  • the arms 350 have a first end 351 connecting to the primary ring 310 substantially radially and a second end 352 connecting to the secondary ring 320 substantially tangentially.
  • the arms 350 are arranged in three pairs positioned at 120 ° to each other.
  • the first ends 351 are integral with the internal surface 313 of the part of the primary ring 310 projecting from the reflecting surface 102, at the level of the non-indented portions.
  • the arms 350 of each pair diverge from one another so that the second end 352 of each of the arms 350 of a pair almost joins the second end 352 of the adjacent arm 350 belonging to another pair of arms 350.
  • the arms 350 are curved towards the primary mirror 100.
  • Each arm 350 has a cross section which varies between the ends 351 and 352 in such a way that, for a given force generating stresses in the branch, the stresses are distributed in an equivalent manner. along the arm 350.
  • the cross section here has a rectangular shape having a major axis parallel to the optical axis A.
  • the support 300 comprises a means for mechanically decoupling the secondary mirror 200 from the primary mirror 100.
  • the secondary crown 320 includes a crown external 321 to which are connected the second ends 352 of the arms 350 and an internal ring 322 coaxial with the outer ring 321 and connected thereto by symmetrically distributed mechanical decoupling elements.
  • the mechanical decoupling elements are here formed of three elastic blades 323 extending radially between the outer ring 321 and the internal ring 322.
  • the elastic blades 323 are arranged at 120 ° so that each elastic blade 323 is positioned symmetrically between two pairs. arm 350.
  • Each elastic blade 323 is arranged to be relatively rigid in a direction parallel to the optical axis A but relatively flexible in a circumferential direction of the secondary crown 200.
  • the outer ring 321 comprises third through holes 331 and the inner ring 322 comprises fourth through holes 332 which are substantially aligned with the holes 331.
  • Each hole 331 and the hole 332 which is aligned with it form a pair of holes allowing the introduction of a cannula C for injecting glue from the outside of the outer crown 321.
  • the bore 331 is arranged to guide the cannula towards the bore 332.
  • Each bore 332 is stepped to form a stop at the depression of the cannula in the bore 332 and is arranged to provide a tight connection with the cannula C.
  • each bore 332 has an inlet section having a diameter slightly less than the diameter of the end cannula C slightly set back (1 or 2 mm) from its end so as to grip the latter (see in particular figure 8 ).
  • the secondary mirror 200 is received in the inner ring 322 with a radial play of about 0.25 mm and is glued therein by means of a structural adhesive.
  • the positioning of the pairs of bores 331, 332 allows a homogeneous distribution of the adhesive around the secondary mirror 200.
  • the small clearance between the internal surface of the internal ring 322 and the peripheral surface 204 of the secondary mirror 200 allows, on the one hand, to adjust the position (inclination and coaxiality) of the secondary mirror 200 relative to the axis of the primary mirror 100 and, on the other hand, to limit the thickness of adhesive extending between these two surfaces. Having a relatively small thickness makes it possible to limit the stresses that the adhesive can exert on the secondary mirror 200 due to a thermal variation.
  • the glue used here is an epoxy glue and, for example, that of the 3M brand bearing the reference DP490. It will be noted that the outer ring 321 comprises an inner surface provided with an annular recess 324 so as not to interfere with the secondary mirror 200 during operations for adjusting the position of said secondary mirror 200.
  • Stage 1 has a shape of revolution around a central axis collinear with the optical axis of the telescope and comprises a front face 2 facing the fixing face 103 of the primary mirror 100 and, opposite the latter, a rear surface bearing the general reference 3 on the figure 1 .
  • the front face 2 is provided with a groove 4 of circular shape centered on the central axis of the fixing plate 1.
  • the groove 4 has a flat bottom on which are fixed fixing elements 10 each having a base 11 resting on it. flat on the bottom of the groove 4 and, opposite the base 11, a bearing 12 which projects from the front face 2.
  • the bearing 12 is connected to the base 11 by two rods 13 arranged in a triangle with the base 11.
  • the links 13 are in one piece with the bearing 12 and the base 11.
  • each fixing element 10 is housed in the groove 107 between the outer annular portion 108 and the intermediate annular portion 109.
  • Each bearing 12 receives a third section 23 of an axis, generally designated at 20 in the figures, having a first section 21 and a second section 22 respectively received in a first bore 38 and a second bore 39 which are formed in the annular portion external 108 and the intermediate annular portion 109.
  • the holes 38 and 39 open out.
  • the second section 22 has a diameter smaller than the third section 23 and is connected to the latter by a shoulder forming a stop at the depression of the second section 22 in the second bore 39.
  • the first section 21 has a diameter greater than the third section 23.
  • the first section 21 and the second section 22 are respectively glued in the first bore 38 and the second hole 39 by means of an anaerobic structural adhesive.
  • the adhesive used is more particularly that of the LOCTITE brand bearing the reference 638. It is advantageous that the smallest possible space is left between the external surface of the sections 21 and 22 on the one hand and the internal surface of the bores 38, 39 The smallest possible space must be sufficient to allow the relative sliding of the two surfaces before bonding and to admit a quantity of adhesive just sufficient to fix the two surfaces to one another taking into account the forces to be supported.
  • the fluidity of the glue influences the dimensioning of this space since the more fluid the glue, the thinner the space can be. It is understood that an attempt is made to minimize this thickness and therefore the quantity of glue so that, in the event of a temperature variation, the glue does not generate on the primary mirror 100 stresses liable to deform it.
  • the third section 23 is received in the bearing 12 with a sliding fit.
  • the sliding adjustment is here of the H7g6 type but could be of the H7g5 type or any other sliding adjustment leaving the smallest possible space between the external surface of the third section 23 and the internal surface of the bearing 12.
  • the third section 23 is glued in bearing 12 by means of a structural glue injected into the central channel 25 then the transverse channel 27 by means of the cannula C introduced into an inlet section of the central channel 25 opening onto the end face 26.
  • the glue used is more particularly an epoxy structural glue and for example that of 3M brand bearing the reference DP490.
  • the smallest possible space left between the external surface of the third section 23 and the internal surface of the bearing 12 must be sufficient to allow the relative sliding of the two surfaces before bonding and to admit a quantity of glue just sufficient to fix the two surfaces. 'to each other given the efforts to be supported.
  • the fluidity of the glue influences this space since the more fluid the glue, the thinner the space can be. It is understood that an attempt is made to minimize this thickness and therefore the quantity of glue so that, in the event of a temperature variation, the glue does not generate on the primary mirror 100 stresses liable to deform it.
  • Each of the bores 39 opens on the side of the annular groove 107 in a recess 40 formed in the intermediate annular portion 109 to prevent contact between the bearing 12 and a surface of the intermediate annular portion 109.
  • the connecting rods 13 are arranged to ensure a mechanical decoupling of the primary mirror 100 and of the fixing plate 1 so as to support the primary mirror 100 while limiting the creation of mechanical stresses in the primary mirror 100.
  • the rods 13 comprise portions of reduced thickness in a direction perpendicular to the optical axis and to their longitudinal axis so that the rods are more rigid under forces parallel to the optical axis A than under forces perpendicular to the 'optical axis A and their axis longitudinal.
  • the assembly of the mirrors 100 and 200, of the support 300 and of the plate 1 is carried out as follows.
  • each fixing element 10 is first fixed to the plate 1 by means of screwed elements not visible in the figures.
  • the mirror 100 is then fixed to the fixing elements 10.
  • the bearings 12 are engaged in the groove 107 and each axis 20 is successively engaged in the bore 38, the bearing 12 and the bore 39 after the anaerobic structural glue has been deposited on the first section 21 and the second section 22.
  • the epoxy structural adhesive is then introduced between the internal surface of the bearing 12 and the external surface of the third section 23 via the central channel 25 then the transverse channel 27.
  • the support 300 is then glued to the plate 1 then the secondary mirror 200 is glued to the support 300 as indicated above.
  • the rear surface 3 of the mounting plate 1 comprises positioning references of the telescope with respect to an image capture assembly symbolized at 400 on the figure 1 arranged facing the rear face 3.
  • the image capture assembly 400 comprises a sensor and optionally one or more lenses mounted in front of the sensor.
  • the sensor is positioned parallel to the rear surface 3 and so that the focal point defined by the concave surface portion 53 coincides with that of the sensor.
  • the reflecting surface of the secondary mirror 200 comprises a central portion provided with at least one engraving 210 for centering the secondary mirror 200 with respect to the primary mirror 100.
  • the engraving 210 is in the form of a ring centered on an optical axis of the secondary mirror.
  • the positioning of the secondary mirror 200 relative to the primary mirror 100 is adjusted, before bonding, by optical interferometry between the surfaces 202 and 102, by moving the secondary mirror 200 using micro-actuators.
  • the axis can be mounted in a cantilever manner from a single rear portion of the primary mirror.
  • the telescope of the invention is extremely efficient when the four characteristics of the invention are combined as in the embodiment described, the four characteristics are independent of each other. and it is possible to carry out the invention using the first feature alone or in combination with one or two other of the remaining features.
  • the means of mechanical decoupling of the secondary mirror 200 vis-à-vis the primary mirror 100 is provided only by the arrangement of the secondary ring 320 in two rings 321, 322 connected to one another by means of elastic blades 323, additional mechanical decoupling means can be envisaged.
  • a mechanical decoupling means such as an elastic blade, could be interposed between each first end 351 of arm 350 and the primary ring 310.
  • the fixing of the primary mirror on the plate can be carried out differently.
  • the fasteners 10 may have a different shape from that described and the pins 20 may be smooth or be cantilevered.
  • the number of fasteners 10 may be different from three.
  • the primary crown can be fixed differently on the plate, for example glued.
  • the transverse channel 27 may have only one end opening onto the external surface of the third section 23 and there may be several transverse channels 27, for example three at 120 ° from each other.
  • the rear face of the plate may not include positioning references or else only part of them.
  • the invention is applicable to other types of telescope and for example a Schmidt Cassegrain type telescope.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Telescopes (AREA)

Claims (21)

  1. Teleskop, umfassend eine Befestigungsplatte (1), einen primären Spiegel (100), der von einer Vorderseite (2) der Platte getragen wird, und einen sekundären Spiegel (200), der gegenüber dem primären Spiegel von einem Träger (300) getragen wird, wobei der Träger (300) einen primären Kranz (310) umfasst, der um den primären Spiegel (100) herum montiert ist, einen sekundären Kranz (320), der um den sekundären Spiegel (200) herum montiert ist, Arme (350), die den sekundären Kranz mit dem primären Kranz verbinden, sowie Mittel zur mechanischen Entkopplung des sekundären Spiegels (200) relativ zum primären Spiegel (100), dadurch gekennzeichnet dass:
    - der sekundäre Kranz (320) einen äußeren Kranz (321) und einen inneren Kranz (322) umfasst, der koaxial zum äußeren Kranz und mit demselben über symmetrisch verteilte Elemente (323) zur mechanischen Entkopplung verbunden ist,
    - der sekundäre Spiegel (200) mit Spiel in dem inneren Kranz (322) aufgenommen und in diesen mittels eines Strukturklebstoffes geklebt ist; wobei der äußere Kranz (321) erste Durchgangsbohrungen (331) umfasst und der innere Kranz zweite Durchgangsbohrungen (332) umfasst, die im Wesentlichen mit den ersten Bohrungen ausgerichtet sind, um das Einführen einer Klebstoffeinspritzkanüle zu ermöglichen.
  2. Teleskop nach Anspruch 1, bei dem die zweite Bohrung (332) gestuft ist, um einen Anschlag entgegen dem Eindrücken der Kanüle in die zweite Bohrung zu bilden, und die zweite Bohrung ausgebildet ist, um eine dichte Verbindung mit der Kanüle zu ermöglichen.
  3. Teleskop nach Anspruch 1 oder Anspruch 2, bei dem die ersten Bohrungen in der Nähe der Arme ausgebildet sind.
  4. Teleskop nach einem der vorhergehenden Ansprüche, bei dem der primäre Kranz (310) einen Rand (311) hat, der von dem primären Spiegel (100) in Richtung des sekundären Spiegels vorsteht, und der Rand mit Einkerbungen (312) versehen ist.
  5. Teleskop nach einem der vorhergehenden Ansprüche, bei dem der primäre Spiegel mit der Platte über Befestigungselemente (10) verbunden ist, die jeweils eine Basis (11) haben, die an der Platte befestigt ist, und entgegengesetzt zur Basis ein Lager (12), das zwischen einem ersten hinteren Teil (108) und einem zweiten hinteren Teil (109) des primären Spiegels gelagert ist und das einen dritten Abschnitt (23) eines Bolzens (20) aufnimmt, der einen ersten Abschnitt (21) und einen zweiten Abschnitt (22) hat, die in einer ersten Bohrung (38) bzw. einer zweiten Bohrung (39) aufgenommen sind, die in dem ersten hinteren Teil bzw. dem zweiten hinteren Teil ausgebildet sind; dass der dritte Abschnitt in dem Lager mit einer Gleitpassung aufgenommen ist und in das Lager mittels eines Strukturklebstoffes geklebt ist; und dass der Bolzen mit einem zentralen Kanal (25) versehen ist, der ein erstes Ende hat, das auf einem Teil (26) des Bolzens mündet, der zugänglich ist, wenn der Bolzen in der Position in den Bohrungen ist, um ein Ende einer Klebstoffeinspritzkanüle aufzunehmen, sowie ein zweites Ende, das in mindestens einen Querkanal (27) mündet, von dem mindestens ein Ende auf einer Außenfläche des dritten Abschnitts mündet.
  6. Teleskop nach Anspruch 5, bei dem der zweite Abschnitt (22) einen Durchmesser hat, der kleiner als der dritte Abschnitt (23) ist, und mit diesem über eine Schulter verbunden ist, die einen Anschlag entgegen dem Eindrücken des zweiten Abschnitts in die zweite Bohrung (39) umfasst.
  7. Teleskop nach Anspruch 6, bei dem die zweite Bohrung (39) durchgehend ist.
  8. Teleskop nach Anspruch 6, bei dem der erste Abschnitt (21) einen Durchmesser hat, der größer als der dritte Abschnitt (23) ist.
  9. Teleskop nach einem der Ansprüche 5 bis 8, bei dem der zweite Abschnitt (22) eine Aussparung (40) gegenüber dem Lager (12) hat, um einen Kontakt zwischen dem Lager und dem zweiten Abschnitt (109) zu vermeiden.
  10. Teleskop nach einem der Ansprüche 5 bis 9, bei dem die Gleitpassung vom Typ H7g6 oder H7g5 ist.
  11. Teleskop nach einem der Ansprüche 5 bis 10, bei dem der erste und der zweite Abschnitt (108, 109) voneinander durch einen Abschnitt einer kreisförmigen Nut (107) getrennt sind, die auf eine optische Achse des Teleskops zentriert ist.
  12. Teleskop nach einem der vorhergehenden Ansprüche, bei dem die Arme (350) ein erstes Ende (351) haben, das an den primären Kranz (310) angrenzt, sowie ein zweites Ende (352), das an den sekundären Kranz (320) angrenzt, wobei sich das erste Ende im Wesentlichen radial in Bezug auf den primären Kranz erstreckt und sich das zweite Ende im Wesentlichen tangential an den sekundären Kranz anschließt.
  13. Teleskop nach einem der vorhergehenden Ansprüche, bei dem die Arme (350) in Richtung des primären Spiegels (100) gebogen sind.
  14. Teleskop nach einem der vorhergehenden Ansprüche, bei dem jeder Arm (350) einen Querschnitt hat, der zwischen den Enden (351, 352) derart variiert, dass für eine gegebene Kraft, die Spannungen in dem Arm erzeugt, die Spannungen auf äquivalente Weise entlang des Arms verteilt sind.
  15. Teleskop nach einem der vorhergehenden Ansprüche, bei dem: die Arme (350) ein erstes Ende (351) haben, das an den primären Kranz (310) angrenzt, sowie ein zweites Ende (352), das an den sekundären Kranz (320) angrenzt, wobei sich das erste Ende radial in Bezug auf den primären Kranz erstreckt und sich das zweite Ende tangential in Bezug auf den sekundären Kranz erstreckt; wobei die Arme in Richtung des primären Spiegels gebogen sind; und jeder Arm einen Querschnitt hat, der zwischen den Enden derart variiert, dass für eine gegebene Kraft, die in dem Arm Spannungen erzeugt, die Spannungen auf äquivalente Weise entlang des Arms verteilt sind.
  16. Teleskop nach einem der vorhergehenden Ansprüche, bei dem das Teleskop vom Typ Cassegrain ist und die Platte (1) eine Rückfläche (3) hat, die Positionierungsreferenzen zum Positionieren des Teleskops in Bezug auf eine Bildaufnahmevorrichtung (400) hat, die gegenüber der Rückfläche angeordnet ist.
  17. Teleskop nach Anspruch 16, bei dem die Positionierungsreferenzen durch eine optische Qualitätsbearbeitung erhalten werden und eine Fläche (51) umfassen, die senkrecht zu einer optischen Achse des Teleskops ist, um eine Neigungsreferenz zu bilden, eine zentrale Bohrung (52) zum Bilden einer Zentrierreferenz und eine konkave Fläche (53) in Form einer kugelförmigen Kappe mit einem Zentrum auf der optischen Achse, um einen Abstand der Bildaufnahmevorrichtung (400) in Bezug auf den sekundären Spiegel (200) zu definieren.
  18. Teleskop nach Anspruch 16 oder Anspruch 17, bei dem der sekundäre Spiegel (200) gegenüber dem primären Spiegel (100) einen zentralen Teil umfasst, der mit mindestens einer Zentriergravur zur Zentrierung des sekundären Spiegels in Bezug auf den primären Spiegel versehen ist.
  19. Teleskop nach Anspruch 18, bei dem die Gravur in Form eines Ringes ist, der auf eine optische Achse des sekundären Spiegels (200) zentriert ist.
  20. Teleskop nach einem der vorhergehenden Ansprüche, bei dem das Lager (12) mit der Basis über zwei Stangen (13) verbunden ist, die mit der Basis (11) in Form eines Dreiecks angeordnet sind.
  21. Teleskop nach Anspruch 20, bei dem die Stangen (13) einstückig mit dem Lager (12) und der Basis (11) ausgebildet sind und die Stangen so angeordnet sind, dass sie eine mechanische Entkopplung des primären Spiegels (100) und der Platte (1) derart sicherstellen, dass der primäre Spiegel getragen wird, während die Erzeugung von mechanischen Spannungen in dem primären Spiegel begrenzt wird.
EP18758612.8A 2017-08-22 2018-08-21 Teleskop mit verbesserter leistung und vereinfachter montage Active EP3673313B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1700869A FR3070503B1 (fr) 2017-08-22 2017-08-22 Telescope a performance amelioree et montage simplifie
PCT/EP2018/072587 WO2019038302A1 (fr) 2017-08-22 2018-08-21 Telescope a performance amelioree et montage simplifie

Publications (2)

Publication Number Publication Date
EP3673313A1 EP3673313A1 (de) 2020-07-01
EP3673313B1 true EP3673313B1 (de) 2021-07-07

Family

ID=61655803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18758612.8A Active EP3673313B1 (de) 2017-08-22 2018-08-21 Teleskop mit verbesserter leistung und vereinfachter montage

Country Status (9)

Country Link
US (1) US10976517B2 (de)
EP (1) EP3673313B1 (de)
CN (1) CN111033345B (de)
CA (1) CA3073490C (de)
FR (1) FR3070503B1 (de)
IL (1) IL272648B (de)
RU (1) RU2728831C1 (de)
WO (1) WO2019038302A1 (de)
ZA (1) ZA202001118B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3070503B1 (fr) * 2017-08-22 2020-05-22 Safran Electronics & Defense Telescope a performance amelioree et montage simplifie
FR3070502B1 (fr) * 2017-08-22 2020-06-26 Safran Electronics & Defense Telescope a montage simplifie et procede de reglage d'un tel telescope
CN110531531B (zh) * 2019-09-27 2021-08-03 昆明北方红外技术股份有限公司 卡塞格林光学系统主次反射镜的装调方法
CN113608327A (zh) * 2021-08-11 2021-11-05 中国科学院长春光学精密机械与物理研究所 同轴系统的次镜支撑结构

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3058000B2 (ja) * 1994-02-28 2000-07-04 キヤノン株式会社 ミラー光学装置
FR2852697B1 (fr) * 2003-03-21 2005-06-03 Dispositif compact d'imagerie matricielle infrarouge
US7743576B2 (en) * 2004-02-05 2010-06-29 S.A. Robotics Deployable and retractable space frame
ES2319526T3 (es) * 2004-12-28 2009-05-08 Alcatel Lucent Dispositivo de soporte de elementos de un equipo espacial, con laminas flexibles desplegables.
US8567969B2 (en) * 2012-02-10 2013-10-29 Raytheon Company Bi-polymer infrared optics for high-G applications
RU2541116C2 (ru) * 2013-02-06 2015-02-10 Федеральное государственное унитарное предприятие "Научно-производственное объединение им. С.А. Лавочкина" Двухканальный космический телескоп для одновременного наблюдения земли и звезд (варианты)
FR3010537B1 (fr) * 2013-09-12 2015-10-16 Sagem Defense Securite Telescope a faibles deformations
FR3010536B1 (fr) * 2013-09-12 2016-12-23 Sagem Defense Securite Support de miroir secondaire pour telescope
CN104898252B (zh) * 2015-05-22 2017-07-14 中国科学院长春光学精密机械与物理研究所 航空相机卡塞格林主次镜支撑结构
JP6177487B1 (ja) * 2016-01-14 2017-08-09 オリンパス株式会社 内視鏡用カバー、内視鏡、カバーユニット及び内視鏡ユニット
CN206057673U (zh) * 2016-08-25 2017-03-29 云南云光发展有限公司 一种用于高倍稳像双目望远镜的光学系统
CN106646816A (zh) * 2017-01-16 2017-05-10 中国科学院长春光学精密机械与物理研究所 一种应用于空间反射镜的高精度粘接固定装置
FR3070503B1 (fr) * 2017-08-22 2020-05-22 Safran Electronics & Defense Telescope a performance amelioree et montage simplifie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3673313A1 (de) 2020-07-01
FR3070503A1 (fr) 2019-03-01
US10976517B2 (en) 2021-04-13
CN111033345B (zh) 2022-07-01
CA3073490C (fr) 2021-08-24
RU2728831C1 (ru) 2020-07-31
WO2019038302A1 (fr) 2019-02-28
US20200233201A1 (en) 2020-07-23
ZA202001118B (en) 2021-08-25
IL272648B (en) 2020-11-30
CN111033345A (zh) 2020-04-17
IL272648A (en) 2020-03-31
FR3070503B1 (fr) 2020-05-22
CA3073490A1 (fr) 2019-02-28

Similar Documents

Publication Publication Date Title
EP3673313B1 (de) Teleskop mit verbesserter leistung und vereinfachter montage
EP3673312B1 (de) Leichter zur montierendes teleskop und verfahren zur justierung solch eines teleskops
EP3673311B1 (de) Teleskop mit vereinfachter montage
FR2553199A1 (fr) Connecteur de fibres optiques
EP3044623A1 (de) Teleskop mit geringer verformung
EP3676648B1 (de) Teleskop mit verbesserter leistung
WO2013110785A1 (fr) Dispositif de fixation d'un organe optique, systeme de fixation et dispositif cryogenique comportant un tel dispositif, procede de fabrication d'un tel dispositif et procede de fixation correspondant
FR2760102A1 (fr) Autodirecteur orientable
EP3044622A1 (de) Sekundärspiegelstütze für ein teleskop
WO2020104587A1 (fr) Connecteur de raccordement hermetique reparable pour fibres optiques
LU102315B1 (fr) Télescope Convertible
EP0130869A1 (de) Video-Abbildungsgerät, insbesondere für sich selbst lenkende Körper
FR2973867A1 (fr) Tete pour autodirecteur de missile, et autodirecteur correspondant
WO2021018658A1 (fr) Système de détection optique pour véhicule automobile
EP4170411A1 (de) Vergrösserungsvorrichtung mit mehrfacher vergrösserung
WO2002071102A2 (fr) Element de maintien et d'indexation d'une structure guidante asymetrique
FR2629220A1 (fr) Dispositif d'assemblage et d'auto-alignement d'une fibre optique et d'un element micro-optique

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200228

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210120

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HOELTZEL, CHARLOTTE

Inventor name: TACCONI, CEDRIC

Inventor name: FURUI, CHRISTOPHE

Inventor name: SEILLIER, FRANCK

Inventor name: ANNA, GUILLAUME

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SAFRAN ELECTRONICS & DEFENSE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1409146

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210715

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602018019806

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210707

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1409146

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210707

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211007

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211007

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211008

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602018019806

Country of ref document: DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210831

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210831

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210821

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

26N No opposition filed

Effective date: 20220408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210821

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20180821

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240723

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20240723

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240723

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20240723

Year of fee payment: 7

Ref country code: IT

Payment date: 20240723

Year of fee payment: 7